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(* Title: HOL/IOA/example/Impl.thy
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ID: $Id$
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Author: Tobias Nipkow & Konrad Slind
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Copyright 1994 TU Muenchen
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The implementation
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*)
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Impl = Sender + Receiver + Abschannel +
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types
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'm impl_state
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= "'m sender_state * 'm receiver_state * 'm packet list * bool list"
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(* sender_state * receiver_state * srch_state * rsch_state *)
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constdefs
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impl_ioa :: ('m action, 'm impl_state)ioa
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"impl_ioa == (sender_ioa || receiver_ioa || srch_ioa || rsch_ioa)"
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sen :: 'm impl_state => 'm sender_state
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"sen == fst"
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rec :: 'm impl_state => 'm receiver_state
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"rec == fst o snd"
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srch :: 'm impl_state => 'm packet list
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"srch == fst o snd o snd"
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rsch :: 'm impl_state => bool list
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"rsch == snd o snd o snd"
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end
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